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Keith_Richards [23]
3 years ago
12

Brianna charges $15, $30,45 and $60 babysitting 1 2 3 and 4 respectively is the relationship between the amount charged and the

number of hours proportion? If so find a unit rate if not explain why not
Mathematics
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

  • proportional
  • $15 per hour

Step-by-step explanation:

We aren't told what the 1, 2, 3, 4 represent. If it is number of children, then the question makes no sense. We have to assume it is probably hours.

  dollars/hours = 15/1 = 30/2 = 45/3 = 60/4 = $15/h

The rate is a constant, so amount is proportional to hours.

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A 5.00 L air sample has a pressure of 107 kPa at a temperature of -50C. If the temperature is raised to 102C and the volume expa
joja [24]

Answer:

129.9 kPa

Step-by-step explanation:

The relationship between temperature T, volume V and pressure P is given by the ideal gas equation which is given as

K = PV/T where K is a constant such that were there is a change of temperature T₁, volume V₁ and pressure P₁ to  temperature T₂, volume V₂ and pressure P₂ then the relationship may be given

P₁V₁/T₁ = P₂V₂/T₂

where T is measured in ⁰K

T₁ = -50 + 273

= 223 ⁰K

T₂ = 102 + 273

= 379 ⁰K

5 × 107/223  = P₂ × 7/379

P₂ = 129.9 kPa

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3 years ago
I know how to find the distance of two coordinates but not three could someone help me on this??
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Find distance between R and S and then between S and T and add them together
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8 0
2 years ago
`h(t)=-5t^{2}+10t+3`
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3 years ago
What numbers would you multiply -3/4 by to equal 1?
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Hope this helps! 
7 0
3 years ago
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